:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.connect-ok-message{color:green;font-weight:700;text-align:center;font-size:1.5em;margin:16px 0}.download-ok-message{margin:16px 0;color:green;font-weight:700;text-align:center}.download-error-message{margin:16px 0;color:red;font-weight:700;text-align:center}.upload-ok-message{margin:16px 0;color:green;font-weight:700;text-align:center}.upload-error-message{margin:16px 0;color:red;font-weight:700;text-align:center}.popup-error-message{color:#c00;font-size:16px;margin-bottom:8px;text-align:center}.input-row{display:flex;align-items:center;margin-bottom:12px}.input-textbox{font-size:16px;padding:6px 12px;border:1px solid #ccc;border-radius:6px;margin-right:8px;width:220px;box-sizing:border-box}.send-btn{font-size:16px;padding:6px 18px;border-radius:6px;border:1px solid #888;background:#f5f5f5;cursor:pointer}.app-title{font-size:18px;font-weight:700;margin-bottom:8px}body{overflow-y:auto;overflow-x:hidden}#root{margin:0 auto}.app-wrapper{padding-top:0;margin-top:0;width:100vw;min-height:80vh;font-family:sans-serif;background:#fff;overflow-y:auto;overflow-x:hidden}.app-box{max-width:400px;width:100%;margin:0 auto;border-radius:12px;box-shadow:0 2px 12px #00000014;padding:32px 24px;display:flex;flex-direction:column;align-items:center;background:transparent}.drop-area{border:2px dashed #888;padding:40px;margin:30px 0;text-align:center;border-radius:8px;width:100%;background:#fff;box-sizing:border-box}.file-input{display:none}.file-name{margin-top:10px;font-size:14px;color:#555;word-break:keep-all}.drop-area .or-text{font-size:14px;color:#555}.popup{position:fixed;top:30%;left:50%;transform:translate(-50%,-50%);background:#fff;border:1px solid #888;padding:20px 40px;border-radius:8px;box-shadow:0 2px 8px #0003;z-index:1000;display:flex;flex-direction:column;align-items:center}.popup-close-wrapper{width:100%;display:flex;justify-content:center;margin-top:16px}.popup-close-btn{padding:8px 24px;border-radius:6px;border:1px solid #888;background:#f5f5f5;cursor:pointer;font-size:16px}